The melting of ice faster of 65% in the last 23 years. Over the past 25 years, Antarctica has lost about 3,000 billion tons of ice, with the sea level rise of about 8 millimeters. A study looked at 215,000 mountain glaciers from around the world, the Greenland and Antarctic ice sheets.
The data show a 65% increase in the rate of melting ice over 23 years, due to the climate crisis and the warming of the atmosphere and oceans. Antarctica and Greenland are the worst affected regions in the world. The delicate situation for Antarctica could have devastating knock-on effects for the rest of the world.
The total melting of the ice in this territory could raise the sea level by 58 meters. A rise in seas of this magnitude will have serious consequences for coastal communities in this century. Since the second half of the 1900s, the share of glaciers lost each year has been growing at an ever-increasing rate.
According to some surveys conducted by NASA, 300 billion tons of ice disappear every year near the North Pole, while about 130 billion at the South Pole. Among the main causes we can observe the CO2 production from human activities, deforestation of the world's green lungs, exploitation of fossil fuels for the energy sector and the global warming.
We have to recall that it is estimated that the world average temperature has increased by one degree from 1800 to today, since it could reach the threshold of 1.5 or 2 degrees by 2050. Depsite the Paris Agreement of 2015 have had a clear goal.
Pine Island Glacier is collapsing
Pine Island Glacier is collapsing. A very negative scenario is expected for Pine Island, in the Arctic. Pine Island, the main Antarctic glacier, is thinning at a bewildering rate. The data shows that from 2017 to 2020 the glacier lost large icebergs from the edge, and the recent acceleration could lead to glacier collapse.
This is according to the study conducted by scientists from the University of Washington and the British Antarctic Survey, who evaluated satellite images obtained by the European Space Agency's Copernicus Sentinel-1 mission Pine Island Glacier contains approximately 180 trillion tons of ice, which could help raise sea levels by about half a meter on a global scale.
From 2017 to 2020, the platform lost a fifth of its total area. The authors of the study said that the acceleration has not yet reached potentially catastrophic levels, but there is a considerable risk that the situation will worsen in a short time.
Since 2017 the situation has worsened more and more, despite the fact that, according to geologists, the glacier has remained stable for thousands of years. Study authors said: "The Pine Island Ice Shelf is important because it helps retain some of the relatively unstable West Antarctic glacier if all buttresses in the rim were removed, the glacier could flow more rapidly to the ocean and contribute to raise the water level in a really significant way It seems that the glacier is tearing apart with an acceleration of 12%, due to the loss of the edge of the platform.
The processes we had studied in this region seemed to indicate an irreversible event but at a measured rate but now there is the possibility that these events will occur in a much more abrupt way."